The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1998
Filed:
Jan. 16, 1996
Applicant:
Inventors:
Kil-Yeong Choi, Daejeon, KR;
Mi-Hie Yi, Daejeon, KR;
Moon-Young Jin, Daejeon, KR;
Young-Taik Hong, Daejeon, KR;
Assignee:
Korea Research Institute of Chemical Technology, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528350 ; 528128 ; 528173 ; 528220 ; 528229 ; 528310 ; 528322 ; 521184 ; 521185 ; 521189 ;
Abstract
A polyamideamic acid resin prepolymer represented by formula A having isophorone diamine as one of monomers, ##STR1## in which k, l, m and n are integer of 1 or more, respectively, and ##EQU1## --R-- is at least one group selected from the group consisting of ##STR2## --R'-- is a cis- and trans-conformational mixture of ##STR3## high heat resistant polyamideimide foam produced therefrom, and processes for producing them are disclosed.